Reinforcing and tension device for concrete structures.



No. 880,820. PATENTED 3, 1908.

A. S. PERSON. I REINFOROING AND TENSION DEVICE FOR CONCRETE STRUCTURES.

APPLICATION FILED DEC. s, 1905.

ll TTOHHEVS UNITED STATES PATENT OFFICE.

ARTHUR SAMUEL PIERSON, OF MORRISTOWN, NEW JERSEY.

REINFORCING AND TENSION DEVICE FOR CONCRETE STRUCTURES.

Specification of Letters Patent.

Patented March 3, 1908.

Application filed December 8. 1905- 'Serial No. 290.930-

the art to which it appertains to make and use the same.

This invention relates to what are known as fireproof structures or buildings, and particularly buildings of this class which employ columns, beams, girders and the like, and

' floor and ceiling construction, composed of concrete reinforced with steel bars, ties, expanded metal, or other devices of various kinds and classes which are embedded in the concrete material, and the object of the invention is to provide an improved reinforcing or strengthening device for use in structures of the class specified, and which may be employed as a reinforcing and tension device in all forms of concrete fireproof structures, and in the making of slabs or plates of concrete material of any size.

The invention is an improvement on that described and claimed in an application for Letters Patent of the United States filed by me March 17, 1905, Serial No. 250,571, and is fully disclosed in the following specification of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters, in each of the views, and in which;

Figure 1 is a sectional side view of a reinforcing device of the class specified made ac known as expanded metal, said expanded metal being. the same as that employed by wt a t is known as the Expanded Metal Engineering (cmpany of New York and consix-ting of a sheet of steel or similar i'naterial Win 11 is cut longitudinally and at regular intervals to form parallel slits 01' slots which are alternately arranged in adjacent lines, the sheet or strip after being so out being expanded or drawn out laterally so as to form diamond or similarly shaped openings (1?, in-

closed by diagonally arranged bars a which cross each other in opposite directions, the opposite edges of the strip or sheet when -so expanded being provided with projecting loop members a.

1n the practice of my invention I connect with the strip or sheet of expanded metal made in the manner above described, parallel side bars I) composed of strips of metal bent or folded longitudinally in such manner that they are U-shaped in cross section, and in" practice the opposite edges of the expanded metal strip are inserted into said bars, or between the separate sides thereof, and secured therein in such manner that the bars 6 form substantially an integral part of the device, and the strips of expanded metal cannot be forced together laterally, and the strength thereof is largely increased, and in this way I am enabled to employ the device thus formed as a reinforcing and tensional device for bars, beams, girders, and all similar forms of construction made of concrete, and also in floor and ceiling constructions, and in ties of various kinds and classes and in slabs for various purposes. e

My improvement particularly adapt the use of the expanded metal described to the formation of girders, beams and other articles which necessitate the placing of the reinforcing and tension device on edge so as to add strength and resistance to beams,

girders and other devices made of concrete material.

In Figs. 1 and 2 of the accompanying drawing the expanded metal strip is connected with the bars b,-.or said bars are secured to the expanded metal strip, by compressing parts of the sides I) of said bars into the spaces between the loop members a and into the space within said loop members as clearly shown at b in Fig. 1 and as also shown in Fig. 2, and in the construction shown in Fig. 3, in addition to compressing the sides I) of the bars 1) into the spaces formed by the loop members at to cause the cannot be forced together without breaking the expanded metal or metal sheet, or with-' v out breaking the bars b.

Mf invention is not limited to the exact formiof the bars I) nor to the exact means herein shown anddescribed for connectinlg said bars with the strip of expanded meta and-other forms of construction may be employed for this purpose; andalthough I have shown and desc ed a strip of expanded metal made in a particular manner, it Wlll be apparent that expanded metal fornied in other Ways may be substituted for that herein described. Having fully described my invention, what I claim as new and desire to secure by Lettween the sides of the said side bars and t'ers Patent, r v 1. A reinforcing device for use iii concrete structures,'compr1sing a stripo'r sheet of ex-- panded open Work metal'ha-ving loops or projections at its opposite sides and parallelside bars of sheet metal firmly clasped upon the looped sides of said strip or sheet, portions of said side bars passing partially around, or

partially embracing the material of said oops and holding the saiddoops and the said sheet rigidly in their expanded condition,

' substantially as described.

2. A reinforcing device for concrete structures, comprising a strip or sheet of expanded open fwork metal having loops or projections at its opposite sides, and par allel side bars U-sha ed in crosssection, said side bars being firm yclasped to said strip or sheet, by having the metal of said side bars compressed upon and about said loops or projections, substantially as described;

3; A reinforcing device for use in concrete structures, comprising a strip or sheet of expanded open work metal having loops or projections at its op osite side edges, and parallel side bars U- the said loops or projections extending beas my invention Ihave signed myname 1n aped in cross section,

presence of the subscribing witnesses this 4 6th day of Dec, 1905.

ARTHUR SAMUEL PIERSON. Witnesses:

EDWIN WARREN ORR, JOHN M. MILLs. 

